---
id: CVE-2026-90690
title: >-
  A weakness has been identified in 0x4m4 HexStrike AI up to
  d689933ff579d839c676c82b231f8e98326c5f04
summary: >-
  A weakness has been identified in 0x4m4 HexStrike AI up to
  d689933ff579d839c676c82b231f8e98326c5f04. The affected element is the function
  subprocess.Popen of the file hexstrike_server.py of the component API Tools
  Endpoint. Executing a m…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-77
  - CWE-78
vendor: 0x4m4
product: HexStrike AI
affected:
  - hexstrike_ai d689933ff579d839c676c82b231f8e98326c5f04
published: '2026-09-14'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T15:18:39.120'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90690'
references:
  - url: 'https://github.com/0x4m4/hexstrike-ai/issues/224'
    label: cna@vuldb.com
  - url: 'https://github.com/0x4m4/hexstrike-ai/pull/266'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90690'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/914892'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403223'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403223/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-16T14:45:52.397402Z'
epss: 0.0135
epssPercentile: 0.69833
ingestedAt: '2026-09-14T15:23:07.464Z'
---

## Overview

A weakness has been identified in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04. The affected element is the function subprocess.Popen of the file hexstrike_server.py of the component API Tools Endpoint. Executing a manipulation of the argument additional_args/target/username/password/scan_type/payload can lead to os command injection. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. A fix appears to be in progress.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.